Joseph, V P; Dr.Mathew, K T(Cochin University of Science And Technology, July , 1999)
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Abstract:
Investigations on the design and development of certain new hollow
dielectric hom antennas of rectangular cross section have been carried out. The main
shortcoming of the existing ordinary hollow dielectric hom antenna (HDH) is the
abrupt discontinuity at the feed-end. A new launching technique using a dielectric rod is
introduced to overcome this limitation. Also a strip loading technique is employed for
further modification of the antenna. Radiation parameters of new I-IDH antennas of Eplane
sectoral, H-plane sectoral and pyramidal types were studied and are found to be
very attractive. Theoretical approach based on Marcatili’s principle and two aperture
theory along with diffraction theory and image theory is used to support the experimental
findings. The HDH is considered as solid horn of effective dielectric constant and the
aperture field is evaluated. The antenna is excited by the open waveguide in the dominant
TE1o mode and so the existence of any hybrid mode is mled-out. The theoretical results
are observed to be in good agreement with the experimental results.
Description:
Department of Electronics, Cochin University of Science and Technology
Gopikrishna, M; Dr.Aanandan, C K(Cochin University of Science & Technology, July , 2010)
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Abstract:
A major challenge in the transmission of narrow pulses is the radiation characteristics
of the antenna. Designing the front ends for UWB systems pose challenges
compared to their narrow and wide band counterparts because in addition to
having electrically small size, high efficiency and band width, the antenna has
to have excellent transient response. The present work deals with the design
of four novel antenna designs- Square Monopole, Semi-Elliptic Slot, Step and
Linear Tapered slot - and an assay on their suitability in UWB Systems. Multiple
resonances in the geometry are matched to UWB by redesigning the ground-patch
interfaces. Techniques to avoid narrow band interference is proposed in the
antenna level and their effect on a nano second pulse have also been investigated.
The thesis proposes design guidelines to design the antenna on laminates of any
permittivity and the analyzes are complete with results in the frequency and time
domains.
Description:
Department of Electronics,
Cochin University of Science and Technology
Jesty, Thomas; Surender, G D; Reddy, M L P(RRL (CSIR), 2000)
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Abstract:
The thesis entitled INVESTIDGATIONS ON THE RECOVERY OF TITANIUM VANADIUM AND IRON VALUES FROM THE WASTE CHILORIDE LIQUORS OF TITANIA INDUSTRY embodies the results of the investigations carried out on the solvent extraction separation of iron (III) vanadium(V) and titanium (IV) chlorides from the waste chloride liquors of titanium minerals processing industry by employing tributylphosphate (TBT) as an extractant. The objective of this study is to generate the knowledge base to achieve the recovery of iron, vanadium and titanium cvalues from multi- metal waste chloride liquors originating from ilmenite mineral beneficiation industries through selective separation and value added material development
Rani, Pavithran; Reddy, M L P(Chemical Science Division RRL (CSIR), March , 2005)
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Abstract:
The thesis entitled “ Investigations on the solvent extraction and luminescence of lanthanoids with mixtures of heterocyclic β-diketone S and various neutral oxo-donors” embodies the results of investigations carried out on the solvent extraction of trivalent lanthanoids with various heterocyclic β-diketones in the presence and absence of neutral oxo-donors and also on the luminescent studies of Eu3+-heterocyclic β-diketonate complexes with Lewis bases. The primary objective of the present work is to generate the knowledge base, especially to understand the interactions of lanthanoid-heterocyclic β-diketonates with various macrocyclic ligands such as crown ethers and neutral organophosphorus extractants , with a view to achieve better selectivity. The secondary objective of this thesis is to develop novel lanthanoid luminescent materials based on 3-phenyl-4-aroyl-5-isoxazolones and organophosphorus ligands, for use in electroluminescent devices.
In the beginning it describes the need for the development of new mixed-ligand systems for the separation of lanthanoids and the development and importance of novel luminescent lanthanoid- β-diketonate complexes for display devices. The syntheses of various para substituted derivatives of 4-aroyl-5-isoxazolones and their characterization by various spectroscopic techniques are described. It also investigate the solvent extraction behaviour of trivalent lanthanoids with 4-aroyl-5-isoxazolones in the presence and absence of various crown ethers such as 18C6, DC18C6, DB18C6 and B18C6. Elemental analysis, IR and H NMR spectral studies are used to understand the interactions of crown ethers with 4-aroyl-5-isoxazolonate complexes of lanthanoids.
The synergistic extraction of trivalent lanthanoids with sterically hindered 1-phenyl-3-methyl-4-pivaloyl-5-pyrazolone in the presence of various structurally related crown ethers are studied. The syntheses, characterization and photyphysical properties of Eu3+-4-aroyl-5-isoxazolonate complexes in the presence of Lewis bases like trictylphosphine oxide or triphenylphosphine oxide were studied.
Miriam,Paul; Dr.Ravindranatha Menon,N(Cochin University Of Science And Technology, June 5, 2001)
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Abstract:
The present investigation has addressed the eflects of PHC
contaminated culture medium on the morphology, physiology and
behaviour of shrimps] The shrimp Metapenaeus dobsoni is an important
member of the crustacean animal community abounding the oil
contaminated benthic regions of Cochin backwater system. Since it is
known that true pollutants can disrupt the sustainability of ecosystems by
its eflect on species, populations and communities, a representative
species was used for the study. The results discussed in this work is bound
to help in understanding the ecotoxicant resistance that the animal may
display under toxic conditions compared to aynamic steaay-state systems
in nature
Description:
School of Marine Sciences, Cochin
University of Science and Technology
Paul,Miriam; Dr.Ravindranatha Menon,N(Cochin University of Science & Technology, 2001)
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Abstract:
The present investigation has addressed the effects of PHC contaminated culture medium on the morphology, physiology and behaviour of shrimps. The shrimp Metapenaeus dobsoni is an important member of the crustacean animal community abounding the oil contaminated benthic regions of Cochin backwater system. Since it is known that true pollutants can disrupt the sustainability of ecosystems by its effect on species, populations and communities,a representative species was used for the study. The results discussed in this work is bound to help in understanding the ecotoxicant resistance that the animal may display under toxic conditions compared to dynamic steady-state systems in nature.
Description:
Division of Marine Biology, Microbiology and Biochemistry, Cochin University of Science and Technology
Dhiju Das, P. H.; Dr Leela, Edwin(Cochin University of Science and Technology, October , 2015)
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Abstract:
The study covers theFishing capture technology innovation includes the catching of aquatic
animal, using any kind of gear techniques, operated from a vessel. Utilization
of fishing techniques varies, depending upon the type of fisheries, and can go
from a basic and little hook connected to a line to huge and complex mid water
trawls or seines operated by large fishing vessels.The size and autonomy of a fishing vessel is largely determined by its
ability to handle, process and store fish in good condition on board, and thus
these two characteristics have been greatly influenced by the introduction and
utilization of ice and refrigeration machinery. Other technological developments
especially hydraulic hauling machinery, fish finding electronics and synthetic
twines have also had a major impact on the efficiency and profitability of
fishing vessels.A wide variety of fishing gears and practices ranging from small-scale
artisanal to advanced mechanised systems are used for fish capture in Kerala.
Most important among these fishing gears are trawls, seines, lines, gillnets and
entangling nets and traps The modern sector was introduced in 1953 at
Neendakara, Shakthikulangara region under the initiative of Indo-Norwegian
project (INP). The novel facilities introduced in fishing industry by Indo-
Norwegian project accordingly are mechanically operated new boats with new fishing nets. Soon after mechanization, motorization programme gained
momentum in Kerala especially in Alleppey, Ernakulam and Kollam districts.
Dhannia, T; Dr.Jayalekshmi, S(Cochin University of Science and Technology, January 30, 2012)
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Abstract:
This thesis Entitled INVESTIGATIONS ON THE STRUCTURAL, OPTICAL AND MAGNETIC PROPERTIES OF NANOSTRUCTURED CERIUM OXIDE IN PURE AND DOPED FORMS AND ITS POLYMER NANOCOMPOSITES.Synthesis and processing of nanomatelials and nanostmctures are the essential aspects of nanotechnology. Studies on new physical properties and
applications of nanomaterials and nanostructures are possible only when nanostructured materials are made available with desired size, morphology,crystal structure and chemical composition.Recently, several methods have been developed to prepare pure and doped CeO2 powder, including wet chemical synthesis, thermal hydrolysis, flux method, hydrothermal synthesis, gas condensation method, microwave technique etc. In all these, some special reaction conditions, such as high temperature, high pressure, capping agents, expensive or toxic solvents etc. have been involved.Another hi gh-li ght of the present work is room temperature ferromagnetism in cerium oxdie thin films deposited by spray pyrolysis technique.The observation of self trapped exciton mediated PL in ceria nanocrystals is another important outcome of the present study. STE mediated mechanism has been proposed for CeO2 nanocrystals based on the dependence of PL intensity on the annealing temperature. It would be interesting to extent these investigations to the doped forms of cerium oxide and cerium oxide thin
films to get deeper Insight into STE mechanism.Due to time constraints detailed investigations could not be canied out on the preparation and properties of free standing films of polymer/ceria
nanocomposites. It has been observed that good quality free standing films of PVDF/ceria, PS/C61‘l8, PMMA/ceria can be obtained using solution casting technique. These polymer nanocomposite films show high dielectric constant around 20 and offer prospects of applications as gate electrodes in metal-oxide semiconductor devices.
Description:
Division for Research in Advanced Materials,
Department of Physics,
Cochin University of Science and Technology
Dhannia, T; Dr. S. Jayalekshmi(Cochin University of Science and Technology, January 30, 2012)
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Abstract:
In recent years, nanoscience and nanotechnology has emerged as one of
the most important and exciting frontier areas of research interest in almost all
fields of science and technology. This technology provides the path of many
breakthrough changes in the near future in many areas of advanced technological
applications. Nanotechnology is an interdisciplinary area of research and
development. The advent of nanotechnology in the modern times and the
beginning of its systematic study can be thought of to have begun with a lecture by
the famous physicist Richard Feynman. In 1960 he presented a visionary and
prophetic lecture at the meeting of the American Physical Society entitled “there is
plenty of room at the bottom” where he speculated on the possibility and potential of
nanosized materials.
Synthesis of nanomaterials and nanostructures are the essential aspects of
nanotechnology. Studies on new physical properties and applications of
nanomaterials are possible only when materials are made available with desired
size, morphology, crystal structure and chemical composition. Cerium oxide (ceria)
is one of the important functional materials with high mechanical strength, thermal
stability, excellent optical properties, appreciable oxygen ion conductivity and
oxygen storage capacity. Ceria finds a variety of applications in mechanical
polishing of microelectronic devices, as catalysts for three-way automatic exhaust
systems and as additives in ceramics and phosphors. The doped ceria usually has
enhanced catalytic and electrical properties, which depend on a series of factors
such as the particle size, the structural characteristics, morphology etc. Ceria based
solid solutions have been widely identified as promising electrolytes for
intermediate temperature solid oxide fuel cells (SOFC). The success of many
promising device technologies depends on the suitable powder synthesis
techniques. The challenge for introducing new nanopowder synthesis techniques is to preserve high material quality while attaining the desired composition. The
method adopted should give reproducible powder properties, high yield and must
be time and energy effective. The use of a variety of new materials in many
technological applications has been realized through the use of thin films of these
materials. Thus the development of any new material will have good application
potential if it can be deposited in thin film form with the same properties. The
advantageous properties of thin films include the possibility of tailoring the
properties according to film thickness, small mass of the materials involved and
high surface to volume ratio. The synthesis of polymer nanocomposites is an
integral aspect of polymer nanotechnology. By inserting the nanometric inorganic
compounds, the properties of polymers can be improved and this has a lot of
applications depending upon the inorganic filler material present in the polymer.
Suni, V; Dr.Prathapachandra Kurup,M R(Cochin University of Science and Technology, August 29, 2005)
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Abstract:
The present work deals with the investigations on sthe structural spectral and magnetic interactions of transition metal complexes of multidentate ligands from D1-2-pyridyl ketone and N(4)-Substituted thiosemicarbazides.Thiosemicarbazones are thiourea derivatives with the general formula R2N—
C(S)—NH—N=CR2. In the solution state, the thiosemicarbazones exhibit the thionethiol tautomerism similar to the keto-enol tautomerism, and in solution state the thiol form predominates and a deprotonation at the thiolate group in alcoholic medium enhances the coordination abilities ofthe thiosemicarbazones.The magnetochemistry of metal complexes of di-2-pyridyl ketone is a current
hot subject of research, which mainly owes to the excellent structural diversity of the complexes ranging from cubanes to clusters, with promising ferromagnetic outputs.Only few efforts were aimed at
the magnetochemistry of metal complexes of thiosemicarbazones, and that too were concerned with the complexes of bisttltioscinicarbazones). However, as far as the monothiosemicarbazones are concerned, the magnetochemistry of transition metal complexes of di-2-pyridyl ketone thiosemicarbazones turned up quite unexplored. Consequently, an investigation into it appeared novel and promising to us and that prompted this study, which can be regarded as the initial step towards exploring the magnetochemistry of thiosemicarbazone complexes, especially of di-2-pyridyl ketone derivatives.We could successfully isolate single crystals suitable for X-ray diffraction for the first three ligands.
To conclude, we have synthesized some new thiosemicarbazones and their transition metal complexes and studied their structural, spectral and magnetic attributes. Some ofthe complexes revealed interesting stereochemistries and possible bridging characteristics with spectroscopic evidences. Unfortunately, single crystal Xray diffraction studies could not be carried out for many of these interesting compounds due to the lack of availability of suitable quality single crystals. However,
the magnetic studies provided support for the proposed stereochemistry giving evidences for their magnetically concentrated nature. The magnetic susceptibilities measured at six different temperatures in the 80-298 K range are fitted into different magnetic equations, which provided an idea about the magnetic behavior of the compounds under study. Some of the copper, oxovanadium, nickel and cobalt
complexes are found to possess anomalous magnetic moments, i.e., they revealed no regular gradation with temperature. However, some other copper complexes are observed to be antiferromagnetic, due to super-exchange pathways. The manganese complexes and one of the cobalt complexes are also observed to be antiferromagnetic in nature. However, some nickel complexes have turned up to be ferromagnetic. Accordingly, the versatile stereoehemistry and magnetic behavior of the complexes
studied, prompt us to conclude that the transition metal complexes of di-2-pyridyl ketone thiosemicarbazones are promising systems for potential magnetic applications.
Description:
Department of Applied Chemistry,Cochin University of Science and Technology
Divya, S; Dr. A. Mujeeb(Cochin University of Science and Technology, May 20, 2015)
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Abstract:
This Study overviews the basics of TiO2with respect to its structure, properties and applications. A brief account of its structural, electronic and optical properties is provided. Various emerging technological applications utilising TiO2 is also discussed.Till now, exceptionally large number of fundamental studies and application-oriented research and developments has been carried out by many researchers worldwide in TiO2 with its low-dimensional nanomaterial form due to its various novel properties. These nanostructured materials have shown many favourable properties for potential applications, including pollutant photocatalytic decomposition, photovoltaic cells, sensors and so on. This thesis aims to make an in-depth investigation on different linear and nonlinear optical and structural characteristics of different phases of TiO2. Correspondingly, extensive challenges to synthesise different high quality TiO2 nanostructure derivatives such as nanotubes, nanospheres, nanoflowers etc. are continuing. Here, different nanostructures of anatase TiO2 were synthesised and analysed. Morphologically different nanostructures were found to have different impact on their physical and electronic properties such as varied surface area, dissimilar quantum confinement and hence diverged suitability for different applications. In view of the advantages of TiO2, it can act as an excellent matrix for nanoparticle composite films. These composite films may lead to several advantageous functional optical characteristics. Detailed investigations of these kinds of nanocomposites were also performed, only to find that these nanocomposites showed higher adeptness than their parent material. Fine tuning of these parameters helps researchers to achieve high proficiency in their respective applications. These innumerable opportunities aims to encompass the new progress in studies related to TiO2 for an efficient utilization in photo-catalytic or photo-voltaic applications under visible light, accentuate the future trends of TiO2-research in the environment as well as energy related fields serving promising applications benefitting the mankind. The last section of the thesis discusses the applicability of analysed nanomaterials for dye sensitised solar cells followed by future suggestions.
Sumangala,R; Saseendran Pillai, P R(Cochin University OF Science and Technology, December , 1996)
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Abstract:
The main objective of carrying out this investigation is to develop suitable transducer array systems so that underwater pipeline inspection could be carried out in a much better way, a focused beam and electronic steering can reduce inspection time as well. Better results are obtained by optimizing the array parameters. The spacing between the elements is assumed to be half the wavelength so that the interelement interaction is minimum. For NDT applications these arrays are operated at MHz range. The wavelengths become very small in these frequency ranges. Then the size of the array elements becomes very small, requiring hybrid construction techniques for their fabrication. Transducer elements have been fabricated using PVDF as the active, mild steel as the backing and conducting silver preparation as the bonding materials. The transducer is operated in the (3,3) mode. The construction of a high frequency array is comparatively complicated. The interelement spacing between the transducer elements becomes considerably small when high frequencies are considered. It becomes very difficult to construct the transducer manually. The electrode connections to the elements can produce significant loading effect. The array has to be fabricated using hybrid construction techniques. The active materials has to be deposited on a proper substrate and etching techniques are required to fabricate the array. The annular ring, annular cylindrical or other similar structural forms of arrays may also find applications in the near future in treatments were curved contours of the human body are affected.
Vijayan, K K; Dr.Abdul Rasheed, T M(Cochin University Of Science And Technology, October 8, 2003)
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Abstract:
The central theme of this research concerns the study of vibrationally excited
molecules. We have used the local mode description of such vibrational states, and this
-model has now gained general acceptance. A central feature of the model is the
Wloealizafion of vibrational energy. A study of these high—energy localized states provides
example, becauseof this localization, overtone spectra, which measure the absorption of
T vibrational energy, are extremely sensitive to the properties of X-H bonds. We also use
-overtone spectra to study the conformation of molecules, i.e., the relative internal
orientation of their bonds. The thesis comprises six chapters
Description:
Department of Physics Cochin
University of Science and Technology
Lakshmanan, P T; Dr.Krishnan Nambisan, P N(Cochin University Of Science And Technology, January , 1982)
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Abstract:
The subsequent chapters of the Thesis deal with the toxic
effects of mercury, copper, zinc und~1ead on these bivalve
molluecs, their accumulation and distribution among various
organs of the animals and also the motel retention winstica
by the three species. Static biousauy tests have been conducted
in these studies. It was found that the concentrations of
the various metals studied in these organism are well below
the permitted level given far ease ahellfienes (crab and ehrimgi
and that these maliuscs are very good integrators ef trace
metals from their environment and may be used as an indicator
organism sf metal pallutaute.
The present investigutionsemphaeie the need for a clean
coastal water and gives a serious warning regarding the possiblc
route of heavy metals in ta human body thraugh marine food
chain.
Description:
School Of Marine Sciences
Cochin University Of Science And Technology
Namboothiripad,P V S; Dr.Parameswaran, Nair N(Cochin University of Science and Technology, November 1, 1979)
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Abstract:
The present study is intended to provide a new scientific approach to the solution of the worlds cost engineering problems encountered in the chemical industries in our nation. The problem is that of cost estimation of equipments especially of pressure vessels when setting up chemical industries .The present study attempts to develop a model for such cost estimation. This in turn is hoped would go a long way to solve this and related problems in forecasting the cost of setting up chemical plants.
Zeena, Hamza P; Dr.Thomas, Kurian(Cochin University of Science And Technology, October , 2012)
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Abstract:
Biodegradation is the chemical degradation of materials brought
about by the action of naturally occurring microorganisms. Biodegradation
is a relatively rapid process under suitable conditions of moisture, temperature
and oxygen availability. The logic behind blending biopolymers such as starch
with inert polymers like polyethylene is that if the biopolymer component is
present in sufficient amount, and if it is removed by microorganisms in the
waste disposal environment, then the base inert plastic should slowly
degrade and disappear.
The present work focuses on the preparation of biodegradable and
photodegradable blends based on low density polyethylene incorporating small
quantities of ionomers as compatibilizers.
The thesis consists of eight chapters. The first chapter presents an
introduction to the present research work and literature survey. The details of
the materials used and the experimental procedures undertaken for the study
are described in the second chapter. Preparation and characterization of low
density polyethylene (LDPE)-biopolymer (starch/dextrin) blends are
described in the third chapter. The result of investigations on the effect of
polyethylene-co-methacrylic acid ionomers on the compatibility of LDPE
and starch are reported in chapter 4. Chapter 5 has been divided into two
parts. The first part deals with the effect of metal oxides on the
photodegradation of LDPE. The second part describes the function of
metal stearates on the photodegradation of LDPE. The results of the
investigations on the role of various metal oxides as pro-oxidants on the
degradation of ionomer compatibilized LDPE-starch blends are reported in
chapter 6. Chapter 7 deals with the results of investigations on the role of
various metal stearates as pro-oxidants on the degradation of ionomer
compatibilized LDPE-starch blends. The conclusion of the investigations is
presented in the last chapter of the thesis.
Description:
Department of Polymer Science and Rubber Technology,
Cochin University of Science and Technology
The present study is an attempt to find out the ralation between RNA/DNA ratio, protein,percentage growth rate and specific growth rate of prawn,Penaeus indicus with respect to Nervous system, Eyestalk and Muscle tissues during ontogenesis. We have isolated and purified a natural agglutinin in the hemolymph of P.indicus with antigenecity, agglutinating, hemolytic and antibacterial properties. The influence of growth and environmental parameters on the level of agglutinin in the hemolymph was studied. Agglutinin concentration during normal growth process was compared. The agglutinin concentration in the hemolymph was quantified through developing ELISA, which is useful in health monitoring studies of individual species. Complete amino acid composition of both the subunits of P.indicus agglutinin were analysed. P.indicus agglutinin showed similarity to those proteins having antigenecity,hemolytic and agglutinating properties.Hence, agglutinin was considered as a natural defence protein in the hemolymph of P.indicus responsible for immune surveillance. The humoral defence mechanism of agglutinin was a co-operative effort with hemocytes and complement system. The composition of isolated agglutinin of P.indicus amino acids will be helpful in the synthesis of new antibacterial analogues which can be used against disease causing organisms.
Description:
Dept. of Biotechnology, Cochin University of Science and Technology
Manjusha,K P; Dr.Saleena, Mathew(Cochin University of Science and Technology, April , 2011)
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Abstract:
The present study is aimed at the isolation and characterization of glycosaminoglycans from selected tissues of two commercially important species of cephalopods;squid,Loligo duvauceli and cuttlefish,Sepia pharaonis,keeping in view of the aforementioned benefits on the utilization of waste generated during processing.The cephalopod GAGs may also be expected to have an effect on various physiological functions based on the results obtained from GAGs from other sources.In addition,knowledge of the chemical structure of macromolecules that constitute major components of extracellular matrix(ECM) will be helpful in understanding their interactions with other matrix components.
Description:
School of Industrial Fisheries,
Cochin University of Science and Technology
Bijina, B; Dr.Chandrasekaran,M(Cochin University of Science & Technology, May , 2006)
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Abstract:
Protease inhibitors are one of the most important tools of nature for
regulating the proteolytic activity of their target proteases. They are
synthesized in biological systems and they play a critical role in controlling
a number of diverse physiological functions. The current investigation
focused on the isolation, purification and characterization of a novel
protease inhibitor from Moringa oleifera. The results obtained during the
course of study opens new perspectives for the utilization of protease
inhibitor from Moringa oleifera for various pharmaceutical, agricultural and
food industries. The biological and physicochemical properties exhibited by
the novel protease inhibitor from Moringa oleifera clearly testify its
suitability for the development as a drug for application in pharmaceutical
industries such as anticoagulant agent or biocontrol agent in agriculture and
even as a food preservant. There is a scope for further research on the
structure elucidation and protein engineering towards a wide range of
further applications. Detailed structure/function analysis of these proteins is
important to facilitate their use in genetic engineering for various
applications.
Description:
Department of Biotechnology,
Cocbin University of Science and Technology
Sapna, K; Dr.Elyas, K K(Cochin University of Science And Technology, March , 2013)
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Abstract:
The microorganisms are recognized as important sources of protease
inhibitors which are valuable in the fields of medicine, agriculture and
biotechnology. The protease inhibitors of microbial origin are found to be versatile
in their structure and mode of inhibition that vary from those of other sources.
Although surplus of low molecular weight non-protein protease inhibitors from
microorganisms have been reported, there is a dearth of reports on proteinaceous
protease inhibitors. The search for new metabolites from marine organisms has
resulted in the isolation of more or less 10,000 metabolites (Fuesetani and
Fuesetani, 2000) many of which are gifted with pharmacodynamic properties. The
existence of marine microorganisms was reported earlier, and they were found to
be metabolically and physiologically dissimilar from terrestrial microorganisms.
Marine microorganisms have potential as important new sources of enzyme
inhibitors and consequently a detailed study of new marine microbial inhibitors
will provide the basis for future research (Imada, 2004).
Description:
Department of Biotechnology, Cochin University of Science and Technology
Joshy, M K; Dr.Rani,Joseph(Cochin University of Science and Technology, October , 2007)
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Abstract:
The aim of this
investigation is to study the effectiveness of isora fibre as reinforcement material
in short and long forms, for unsaturated polyester and epoxy resins.Studies on the optimization of fibre length and fibre loading of
randomly oriented isora-polyester composite are described.The
salient features of the alkali treatment of short isora fibre on the properties of
randomly oriented isora-polyester composite are outlined in this thesis.The
effect of surface modification of the hydrophilic isora fibre by different chemical
treatments on the properties of randomly oriented isora-polyester composite is
outlined.The properties of oriented and
randomly oriented isora fibre reinforced epoxy composites with special reference
to the effect of fibre loading are reported and also the dynamic mechanical
properties ofthe oriented and randomly oriented isora-polyester and isora-epoxy
composites are presented and the water absorption kinetics
of oriented and randomly oriented isora-polyester composites and oriented isoraepoxy
composites are given. The effect of hot air oven aging on the tensile and
flexural properties of oriented isora-polyester and isora-epoxy composites are
also reported in this thesis.
Description:
Department of Polymer Science and Rubber Technology,Cochin University of
Science and Technology
Girijakumari, S; Dr. Rajan Pillai, C V(Cochin University of Science and Technology, February , 1997)
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Abstract:
This thesis Entitled Journal productivity in fishery science an informetric analysis.The analyses and formulating results of the study, the format of the thesis was determined. The thesis is divided into different chapters mentioned below. Chapter 1 gives an overview on the topic of research. Introduction gives the relevance of topic, define the problem, objectives of the study, hypothesis, methods of data collection, analysis and layout of the thesis. Chapter 2 provides a detailed account of the subject Fishery science and its development. A comprehensive outline is given along with definition, scope, classification, development and sources of information.Method of study used in this research and its literature review form the content of this chapter. Chapter 4 Details of the method adopted for collecting samples for the study, data collection and organization of the data are given. The methods are based on availability of data, period and objectives of the research undertaken.The description, analyses and the results of the study are covered in this chapter.
Description:
Department of Computer Science, Cochin University of Science and Technology
Jayadevan, V R; Dr.Chandrasekharan, N S(Cochin University of Science and Technology, August 17, 1999)
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Abstract:
The focus of study in this thesis is on the necessity and extent of judicial creativity in interpreting provisions in certain crucial areas in the Constitution of India. Judicial innovation was essential to adapt the constitutional provisions to modern changed context. Creativity of the Court has been mainly in the creation and introduction of certain new concepts not found in any specific provision of the Constitution which, but were essential for its meaningful interpretation.Independence of the judiciary, basic structure and certain elements of social justice cherished as ideal by the makers of the Constitution are some such concepts infused into the Constitution by the judiciary. The second aspect of creativity lies in the attempt of the Court to construe provisions in the Constitution with a view to upholding and maintaining the concepts so infused into the Constitution. Introduction of those concepts into the Constitution was necessary and is justified. all important features of the Constitution like democratic form of government, federal structure, judicial review, independence of judiciary and rule of law were thus included in the doctrine to prevent their alteration by amendments.As a result of such a construction, the nature of those directive principles itself has changed. They ceased to be mere directives for state action but became mandate for it. If left to legislative or executive will for their implementation, the directives would have remained enforceable as ordinary right.To conclude, notwithstanding the errors committed by the Supreme Court in construing the provisions in the above areas, they stand testimony to its creative and innovative response in interpreting the Constitution. If this trend is continued, it will be possible to achieve through the judicial process, maintenance of independence of the judiciary, avoidance of destruction of the Constitution through the process of amendment and realisation of social justice envisaged in the directive principles. It can be hoped that the Court would maintain its energetic and vibrant mind and rise up to the occasions and extend the same to other areas in future.
Description:
School of Legal
Studies, Cochin University of Science and Technology.
Gopakumaran Nair, S; Dr.Chandrasekharan Pillai, K N(Cochin University of Science and Technology, December 21, 2009)
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Abstract:
This thesis entitled “Judicial review of academic decisions.Education in India is being increasingly controlled and guided by the courts.This study makes an attempt to assess the involvement of the court in regulating education and its role or interference in the conventional concepts of ‘academic freedom’ and ‘university autonomy.The study mostly concentrates on the jurisdiction under Article 226 of the Constitution and its invocation in academic matters with particular reference to the decisions of the Kerala High Court.The concept of judicial review in the Constituent Assembly, initial approach of the Supreme Court of India towards the doctrine, gradual empowerment of Indian judiciary in this area and the resultant judicial activism.The study proceeds through the analysis of ‘academic freedom’ and ‘university autonomy’ in the 4"‘ chapter. This chapter attempts to probe academic freedom and university autonomy in India,England and United States and autonomy of Indian universities before and after independence.Basic principles and the jurisdictional parameters of
judicial review in the area of academic decisions, as pronounced by the Apex Court, can be convincingly and consistently followed by the High Courts, which is possible only if special Academic Benches are constituted.
Description:
School of Legal
Studies, Cochin University of Science and Technology
Raveendran Nair, B; Dr.Joseph,Francis D(Cochin University of Science and Technology, December , 1981)
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Abstract:
Urea-formaldehyde resins find numerous
applications in adhesive, textile finishing and moulded
plastic industries. Kinetic investigations of the reactions of
urea and its related compounds with formaldehyde in
aqueous acid, alkaline and neutral media have been carried
out. A thin—layer chromatographic method was developed
for the separation and estimation of the products of these
reactions. Using this technique the various initial steps
in the reactions were analysed and the rate constants have been determined.
Description:
Department of Applied Chemistry, Cochin University of Science and Technology